Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Camunda - The Universal Process Orchestrator
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
SyncTree - SyncTree is a SaaS-based Super Connecting Platform that connects any services you want
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
jBPM - jBPM is a flexible Business Process Management (BPM) Suite.